Quick reset odometer



July 13 1937. N. @n MARQUART 2,@810935 QUICK RESET ODOMETER Film1 Feb. 29, 193e me/whom Waff/2Q?? 6! .Wega/eff Patented July 13, 1937 UNITED STATES PATENT OFFICE QUICK RESET ODOMETER Application February 29, 1936, Serial No. 66,361 s claims. (ci. :ass-144) This invention relates to counting apparatus and has been developed 4more particularly as an improved resetting device 'for odometers.

An object is to provide a resetting mechanism 5 luseful when it is desired to quickly restore the several wheels of a set to zero reading position.

As a further object it is desired to provide mechanism to accomplish the major object without the exertion of axial thrust when any one wheel picks up the next to rotate with it.

Additionally the invention is designed to accomplish its major 'objective at. minimum cost and yet with a high degree of eiiiciency.

Other objects and advantages, including simplicity and ease of assembly, will be understood from the accompanying description.

The invention is illustrated by an accompanying drawing in which:

Fig. 1 is a longitudinal sectionalfview.

Fig. 2 is a transverse section on line 2-2 of 2 Fig. 1. t

Fig. 3 is a view of parts in perspective and in disassembled relation. n

Referring to the drawing, there is seen a shaft II to which is secured a wheel 3 marked with characters to designate decimal parts of a unit. Wheels I5, I1, and I9 are mounted freely on shaft II. Between each'pair oi adjacent wheels is a pinion carrier 2l. These carriers 2i have oppositely positioned notches 23 to receive locking arms 25 projecting from an end plate 21 formed with a radial extension 29. The arms 25 hold the carriers vfrom rela-tive rotation and the several carrier plates are `held in' xed po- 3-5 sition when the extension 29 is secured oni its support (not shown). The end plate surrpunds the shaft II and endwise movement oi the zifllieels toward-the left (Fig. 1) Ais prevented by a removable retainer :3I. Any suitable means may be 40 provided for engaging hub 33 of thefdecimal wheel I3 and rotating the same in the act of normal operationand for resetting.

On theY side of wheel I3 opposite hub 33 are two spaced hubs 3 5 and 31 of unequal radii. Pro- 4-5 jecting from hub-'95 are tw'o teeth 39. Hub 31 is hollow and within the annular wall is an axial slot 4I into which project the ends-43 and 45 of a spring ring 41 located within the hub. The carrier'll is provided with spaced parts 49 ,and

50 5I carryingthe spindle 53 of the pinion 55. When the carrier 2l is assembled about hub- 31 adjacent the shoulder 51 between hubs 35 and 31, the teeth of the pinion are positioned in the path of teeth. as the wheel I3 rotates. To the face 55 of carrier 2| is riveted at 59 a ring-shaped spring 6I having ends 63 adapted to resiliently engage and prevent any undesired rotation of pinion 55, but designed to yield to permit the rotation of the pinion by teeth 39 when wheel I3 is in the act of turning wheel I5. -In order to be so rotated by 5 the pinion 55, the wheel I5 has a hollow hub 65 assembled around hub 31 and a complete series of teeth 61 engaging the pinion 55. This hollow hub has a notch 69 to engage the extended end of the spring ring 41. is tapered and its other endl is iiat radially. It will be seen that if wheel I3 rotates in the direction for normal progressive counting (counterclockwise as seen in Fig. 2) thespring end 45 is depressed along the tapered wall of the 15 notch 69 and into the hub 65 of wheel I5 and wheel I5 is not rotated until teeth 39 engage the teeth of pinion 55. If, however, the wheel I3 is oppositely rotated as it is in the act of quick resetting, the spring end 45 at some time dur 20 ing `a single rotation of wheel I3 engages the radial -surface 'Il at the end of the notch 59 and the two wheels I3y and I5 thereafter rotate together. In so rotating together the ends 63 of spring 6l spread apart to permit rotation of the 25 pinion as is obviously necessary to accommodate the joint rotation of the wheels.

Similar mechanism is provided between wheels I5 and i1 and between wheels I1 and I9. It will be seen that during 'no more than one ro- 30 tation of wheel Z3 in a direction the reverseoi` that for advance counting, it picks up wheel I5 and the two rotate together. Similarly at some time during one rotation of wheel I5 this wheel picks `and rotates ,wheel I1 and wheel I1 35 does likewise to wheel I9. 'I'he position of the slot 4i is such relative to the iigures on thewheels that axial alignment oi' like gures occurs when each wheel picks up the next. In this way a quick reset to alignment of like gures is ef- 40 fected by afew turns of the 'decimal wheel I3.

. |The thrust of spring end 45 is transverse and without an axial component whereby tendency to spread apart the figure wheelsis avoided. The parts are easily assembled, are cheapto manu- 45 facture, and the operation` is very satisfactory.

1. In counting apparatus, a plurality oi.' wheels arranged in series, a transfer pinion rotatable on a iixed axis located between said wheels, the wheels having telescoping hubs and teeth to engage said transfer pinion, one of said hubs having a notch and the other having a spring with a radial projection received within said notch whereby quick resetting may be had.

One end oi the notch 101 2. vIn counting apparatus, a plurality of figure wheels, a transfer pinion with a fixed axis positioned between said wheels, a plurality of hubs on a rst one of said wheels, a rst of one of said hubs having a pair of radially directed teeth to engage said transfer pinion, the second hub being hollow and `having an axial slot, a ring within said hollow hub having deected ends engaging the walls of said slot, one of said ends being relatively longer and projecting radially beyond the slot, the second gure wheel having a gear ring to engage said pinion and a hub rotatable about the second hub of the ilrst gure wheel, said second figure wheel having a notch to engage said radially projecting end of the ring.

3. In counting apparatus, axially disposed gjointrotation.

ure wheels, transfer mechanism therebetween including a xedly mounted pinion, yielding means to normally'hold said pinion from rotation, a rstone of said ilgure wheels carrying a driving member in the form of an annular ring with aradial projection, the second of said iigure wheels having a notch with a sloping wall and radial wall to receive said projection whereby the first wheel may progressively rotate the second wheel through said pinion in one direction of rotation and whereby the rst Wheel may rotate the second wheel continuously with itself upon the engagement of said projection with said radial wall, the yielding means functioning to permit such NORMAN o. MARQUART. 

